Quote:
Originally Posted by vortalexfan
... my screwdriver I was using slipped off the adjustment screw and hit the tuner chassis which then caused me to lose my picture and audio both this time around and when I try tapping the tuner chassis the picture flashes back on temporarily but then goes away again.
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Just to be clear, when you lost the picture and sound, you were left with a blank raster with no snow, correct?
Sometimes we get lost trying to find a problem because of *too much* knowledge.
I would forget about the slipped screwdriver and troubleshoot this like it came in to my shop with no sound and no picture, so that means verifying all voltages in the tuner and IF section, and trying some tubes. Tubes become shock sensitive at times. Maybe the slipped screwdriver caused an overvoltage in one of your tube elements.
Since you seem to have a whole bag of what seem to be unrelated issues, I would again check the power supply voltages and scope them to make sure they're clean.
John